General Dynamics Electric Boat has been awarded a $51.8 million contract modification by the U.S. Navy to plan and perform the post-shakedown availability (PSA) on the nuclear submarine USS New Mexico (SSN-779). Electric Boat is a wholly owned subsidiary of General Dynamics. The PSA, which will comprise maintenance, repairs, alterations and testing, will be performed in and is expected to begin this month. Up to 450 employees will be engaged in the work, which is scheduled for completion by July 2011. USS New Mexico is the sixth ship of the Virginia Class of submarines. Electric Boat and its construction teammate, Northrop Grumman Shipbuilding, have received contracts to produce a total of 18 Virginia-class submarines. Thirty ships are planned altogether.